code: def test_mt_lt(mt):
      expr = mt.filter_rows(mt.locus.position < 17434581)
      assert expr.n_partitions() == 15
      assert expr.count() == (245, 100)
  
file_path: hail/hail/python/test/hail/extract_intervals/test_locus_position.py
imports: import hail
label_desc: Use image node_id 1 for calling a global function with example usage: test_mt_lt(mt) without return types